Numbers Are In!

Good numbers!

Time for meth!

Very nice numbers! Got a graph to post?

I'd say those IAT numbers are fine. At idle, you aren't moving much air through the blower. Therefore, it has a decent amount of time to pick up heat from the blower. Even at idle, that blower gets pretty warm. Just stick your hand on it after it's been running a while....

What are they during the runs? That's a lot more important.

On my non-intercooled M112 setup, 140 is actually pretty decent at idle. I've datalogged lots of complete runs with methanol. They'll usually start at around 140-150, then come down to 100-110 by the end of the run, and as soon as the methanol kicks off, even without pushing actual boost through the blower (i.e. idling or low rpm/low load cruising), the temps start heading back up from all the underhood heat soak. It'll be back to 140 within a few minutes.

Also, the IAT sensor HAS to be on the blower/manifold. Tuning a car without knowing the downstream IATs will yield either 1) a blown motor, or 2) a motor that is leaving about 50 horsepower on the table.

superstang01 said:

While driving around my IATs stay around 124-126. That normal?

Click to expand...

for a roots blower, yes!